Here is a former Lockheed Martin -USAF/CIA - Retired - Don Phillips who upon learning he has cancer in his later years, discloses how his profession in SkunkWorks as a US military contractor for special aircraft brought his outfit to take downed UFO technology and figure out what the components could be used for....and further, to rebuild completely functional space-aircraft technology: https://www.youtube.com/watch?v=G7S8b91Rsfw